The TF2 bonk is tied to Valve's Team Fortress 2, a 2007 multiplayer shooter whose characters, voice lines, and sound cues became staple meme material online. Short game sounds from TF2 spread widely through YouTube edits, gaming compilations, and meme posts because they are instantly readable and easy to time. The bonk remains popular for slapstick moments and quick visual punishment, much like a hitmarker in shooter edits, especially when creators want a game-native sound instead of a generic cartoon hit.